For now I copied the Sublime Text 2 folder using applications, changed icon, but on reboot, they both open the same set of windows and files, and plugin configuration also seems to be shared...How do I fix that?

Thanks, nice shortcut, but I don't want a new application each time, just want 2 copies working side by side like if they were completely different applications.Hm, even if they don't share installation directory, they still share their "Data Directory".